Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac duy dot snippets" » "ta duy dot snippets", "tac du dot snippets", "tac dung dot snippets", "tac duy doc snippets", "tac duy dong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tac duy dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac duy dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac duy dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac duy dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.